Finding the Fourth Proportional to 72.62, 108.82 and 48.17

Step by Step Solution

1. Step 1: Write the proportion equation
   72.62 : 108.82 = 48.17 : x
2. Step 2: Convert to fraction form
   72.62/108.82 = 48.17/x
3. Step 3: Cross multiply
   72.62x = 108.82 × 48.17
4. Step 4: Simplify right side
   72.62x = 5,241.86
5. Step 5: Solve for x
   x = 5,241.86/72.62
6. Step 6: Final answer
   x = 72.18